class Solution {
public:
    bool static com(string a,string b){//编写排序规则
        return a + b < b + a;
    }
    string PrintMinNumber(vector<int> numbers) {
        vector<string> strings;
        for(auto i:numbers)//转成字符串
            strings.push_back(to_string(i));
        sort(strings.begin(),strings.end(),com);//快排
        string res="";
        for(auto i:strings)//加一起就是结果
            res+=i;
        return res;
    }
};